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Measurement of superconducting characteristics of high-critical temperature materials by the magnetic force sensing system.

Author(s) : ISHIGAKI H., ITOH M., ENDO H., HIDA A.

Type of article: Article

Summary

A probing tip made of a small piece of magnetized material was mounted on a cantilever scanned over superconducting surfaces. Magnetic properties of the superconductor generated force on the tip and the force was measured by an optical displacement sensor. Two-dimensional distribution of repulsive force due to the Meissner effect of YBCO, which was fabricated by the melt powder melt growth process, showed evident nonuniformity which is attributed to the nonuniformity of chemical composition of the material. Although melt powder melt growth materials are capable to be used as a magnetic shield, they have much larger residual flux than the materials fabricated by the solid phase reaction process.

Details

  • Original title: Measurement of superconducting characteristics of high-critical temperature materials by the magnetic force sensing system.
  • Record ID : 1994-2759
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 64 - n. 4
  • Publication date: 1993/04
  • Document available for consultation in the library of the IIR headquarters only.

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